Map as a file

tools/asset/chunk/__main__.py

@@ -7,7 +7,8 @@
 Generates DCF + companion DMF files from raw chunk JSON files, or upgrades
 legacy DCF files (version 1 or 2) to the current version.
 
-JSON input (assetsraw/chunks/chunk_X_Y_Z.json):
+JSON input (assetsraw/<map>/chunks/chunk_X_Y_Z.json, one subdirectory per
+map - e.g. assetsraw/overworld/chunks/):
   {
     "tiles": [
       { "pos": [x, y, z], "type": <tile_shape_int>, "tile": <uv_tile_int> }
@@ -25,8 +26,8 @@ JSON input (assetsraw/chunks/chunk_X_Y_Z.json):
   Mesh files are located by searching under assets/meshes/ and referenced by
   path from the assets root in the DCF.
 
-  Output DCF is derived automatically:
-    assetsraw/chunks/chunk_X_Y_Z.json -> assets/chunks/X_Y_Z.dcf
+  Output DCF is derived automatically, preserving the map subdirectory:
+    assetsraw/<map>/chunks/chunk_X_Y_Z.json -> assets/<map>/chunks/X_Y_Z.dcf
 
 Version 4 DCF format (after 8-byte header):
   tile_t   tiles[CHUNK_WIDTH * CHUNK_HEIGHT]   (one per x/y column)
@@ -45,7 +46,7 @@ DMF format:
               Each vertex: uv[2] + pos[3] = 5 x float32 LE = 20 bytes
 
 Usage:
-  python3 -m tools.asset.chunk              # process all assetsraw/chunks/*.json
+  python3 -m tools.asset.chunk              # process all assetsraw/*/chunks/*.json
   python3 -m tools.asset.chunk <file.json>  # process one JSON file
   python3 -m tools.asset.chunk <file.dcf>   # upgrade legacy (v1/v2) DCF in-place
 """
@@ -143,7 +144,7 @@ def write_model_json(path, mesh_rel, texture_rel, color):
 
 
 def derive_dcf_path(json_path):
-    """assetsraw/chunks/chunk_X_Y_Z.json -> assets/chunks/X_Y_Z.dcf"""
+    """assetsraw/<map>/chunks/chunk_X_Y_Z.json -> assets/<map>/chunks/X_Y_Z.dcf"""
     base = os.path.splitext(os.path.basename(json_path))[0]
     if base.startswith('chunk_'):
         base = base[len('chunk_'):]
@@ -432,17 +433,15 @@ def main():
     args = sys.argv[1:]
 
     if not args:
-        chunks_dir = os.path.join(ASSETSRAW_DIR, 'chunks')
-        if not os.path.isdir(chunks_dir):
-            print(f"No directory found: {chunks_dir}")
-            sys.exit(1)
         json_files = sorted(
-            os.path.join(chunks_dir, f)
-            for f in os.listdir(chunks_dir)
+            os.path.join(dirpath, f)
+            for dirpath, _, filenames in os.walk(ASSETSRAW_DIR)
+            if os.path.basename(dirpath) == 'chunks'
+            for f in filenames
             if f.endswith('.json')
         )
         if not json_files:
-            print(f"No JSON files found in {chunks_dir}")
+            print(f"No chunk JSON files found under {ASSETSRAW_DIR}")
             sys.exit(0)
         for p in json_files:
             process_json(p)